Built 2026-10-19 (19 October 2026)

Top Well Threshold Days by Year (ASN00008123)

3 fixed thresholds counted per year at Top Well (ASN00008123): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Top Well Thresholds

  • Top Well: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1963 with 26.
  • Top Well: days with 25 mm (0.98 in) or more of precipitation in 36 years, most in 1984 with 7.
  • Top Well: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 1945 with 2.
  • 3 fixed thresholds have at least one qualifying day at Top Well.
43 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Top Well Days per year at Top Well with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 26 in 1963. 01020301935: 121936: 131937: 101938: 121939: 231940: 131941: 121942: 151943: 151944: 141945: 191949: 101950: 121951: 201962: 131963: 261964: 161965: 121966: 121967: 131968: 161969: 51970: 161971: 111972: 101973: 131974: 211975: 181976: 81977: 71979: 101980: 121981: 191982: 131983: 151984: 201985: 91986: 201987: 161988: 151989: 151990: 101991: 20193519401945196319681973197919841989
Days per year at Top Well with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 26 in 1963.
Days with 10 mm (0.39 in) or more of precipitation per year at Top Well
YearDaysDecade average
19351214
19361314
19371014
19381214
19392314
19401314
19411214
19421514
19431514
19441414
19451914
19491014
19501216
19512016
19621314.1
19632614.1
19641614.1
19651214.1
19661214.1
19671314.1
19681614.1
1969514.1
19701612.7
19711112.7
19721012.7
19731312.7
19742112.7
19751812.7
1976812.7
1977712.7
19791012.7
19801215.4
19811915.4
19821315.4
19831515.4
19842015.4
1985915.4
19862015.4
19871615.4
19881515.4
19891515.4
19901015
19912015
First to last qualifying date each year at Top Well For each year, a bar from the first to the last day at Top Well meeting 10 mm (0.39 in). 1935: 12 January 1935 to 2 September 19351936: 18 April 1936 to 21 November 19361937: 17 May 1937 to 15 September 19371938: 14 March 1938 to 1 November 19381939: 11 February 1939 to 9 November 19391940: 14 May 1940 to 12 October 19401941: 22 April 1941 to 20 August 19411942: 14 April 1942 to 10 August 19421943: 31 January 1943 to 18 September 19431944: 30 April 1944 to 27 August 19441945: 15 May 1945 to 22 September 19451949: 23 May 1949 to 8 October 19491950: 10 May 1950 to 13 September 19501951: 16 April 1951 to 28 September 19511962: 24 May 1962 to 1 October 19621963: 17 February 1963 to 26 August 19631964: 11 April 1964 to 9 October 19641965: 1 May 1965 to 24 November 19651966: 4 April 1966 to 10 October 19661967: 22 January 1967 to 4 October 19671968: 27 January 1968 to 10 September 19681969: 18 May 1969 to 3 December 19691970: 17 February 1970 to 4 October 19701971: 30 January 1971 to 21 October 19711972: 31 May 1972 to 8 October 19721973: 11 May 1973 to 8 September 19731974: 2 January 1974 to 20 October 19741975: 28 February 1975 to 5 October 19751976: 17 May 1976 to 3 September 19761977: 16 May 1977 to 1 October 19771979: 15 February 1979 to 17 August 19791980: 21 April 1980 to 26 August 19801981: 20 January 1981 to 2 October 19811982: 21 January 1982 to 21 September 19821983: 2 May 1983 to 5 December 19831984: 21 February 1984 to 9 November 19841985: 7 March 1985 to 21 September 19851986: 29 January 1986 to 23 August 19861987: 9 February 1987 to 8 November 19871988: 12 May 1988 to 27 December 19881989: 26 February 1989 to 17 August 19891990: 28 January 1990 to 24 September 19901991: 27 February 1991 to 12 November 199119351941195019661972197919851991JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Top Well meeting 10 mm (0.39 in).
First to last qualifying date each year at Top Well
YearFirst dateLast date
19351935-01-121935-09-02
19361936-04-181936-11-21
19371937-05-171937-09-15
19381938-03-141938-11-01
19391939-02-111939-11-09
19401940-05-141940-10-12
19411941-04-221941-08-20
19421942-04-141942-08-10
19431943-01-311943-09-18
19441944-04-301944-08-27
19451945-05-151945-09-22
19491949-05-231949-10-08
19501950-05-101950-09-13
19511951-04-161951-09-28
19621962-05-241962-10-01
19631963-02-171963-08-26
19641964-04-111964-10-09
19651965-05-011965-11-24
19661966-04-041966-10-10
19671967-01-221967-10-04
19681968-01-271968-09-10
19691969-05-181969-12-03
19701970-02-171970-10-04
19711971-01-301971-10-21
19721972-05-311972-10-08
19731973-05-111973-09-08
19741974-01-021974-10-20
19751975-02-281975-10-05
19761976-05-171976-09-03
19771977-05-161977-10-01
19791979-02-151979-08-17
19801980-04-211980-08-26
19811981-01-201981-10-02
19821982-01-211982-09-21
19831983-05-021983-12-05
19841984-02-211984-11-09
19851985-03-071985-09-21
19861986-01-291986-08-23
19871987-02-091987-11-08
19881988-05-121988-12-27
19891989-02-261989-08-17
19901990-01-281990-09-24
19911991-02-271991-11-12

Every Fixed Threshold

Fixed thresholds at Top Well
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4326196320
25 mm (0.98 in): Days with 25 mm or more rain36719843
50 mm (1.97 in): Days with 50 mm or more rain14219451

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1935.

Download the Data

  • Data for Top Well threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).